Warning to disbelievers and deniers of resurrection

وَمَا يَنظُرُ هَـٰٓؤُلَآءِ إِلَّا صَيْحَةً وَٰحِدَةً مَّا لَهَا مِن فَوَاقٍ

And these [disbelievers] await not but one blast [of the Horn]; for it there will be no delay.